EA020076B1 - Gate valve with lubricated secondary seal - Google Patents

Abstract

A gate valve includes a pair of opposing housing members, a gate, primary sealing sleeves and a secondary sealing member. The primary sealing sleeves are disposed in each of the housing members. The gate is configured to slidably pass through a transverse gate chamber defined when the housing members are joined together. The secondary sealing member is secured between the housing members and includes at least one passage or aperture configured to allow lubricating fluid to be applied through at least one of the housing members through the secondary sealing member and onto the gate.

Description

The invention relates to closures for controlling the flow of the process medium, in particular to a device for lubricating a secondary seal of a slide gate valve in place without the need for disassembling and reassembling it.

The level of technology

Gate valves or slide and knife gate valves are installed in pipelines to control the flow of the process medium. In particular, gate and knife gate valves are adapted to abrasive suspensions, but can be used to control the flow of any fluid. Valves of this type got their name because of the vertical movement of the shutter between the open and closed positions. The shutter movement is controlled by a drive that can be actuated manually or automatically. The valve slides between two opposing sealing sleeves located inside the housing, which is connected to the process pipe by means of fittings and flanges. During the operation of the valve, when the valve is raised to the open position, the sealing sleeves move axially towards each other, and when the valve is lowered to the closed position, axially apart from each other.

In addition to the main seal, a secondary seal can also be used to interact with the shutter when the gate valve is operating, which prevents infiltration of the process fluid through the main sleeves and its leakage past the shutter or in the direction of the shutter drive. To facilitate the sliding of the shutter during its operation, a lubricating fluid is introduced into the grooves in the secondary seal, which, passing through the secondary seal, gets into the shutter. Lubrication of the valve increases its smooth operation and seal life, and also reduces the amount of force required to set the valve in motion. However, as soon as the specified lubricant ends, the secondary seal must be removed from the valve for the introduction of additional lubricant. In particular, the valve is disassembled, the secondary seal is removed, lubricant is added, after which the secondary seal is put in place and the valve is reassembled with added lubricant in the secondary seal. The simple process line required for this has a negative effect on the production process.

DISCLOSURE OF INVENTION

Various embodiments of the present invention are directed to the creation of a device for supplying lubricant to the secondary seal of a gate valve in place without the need for disassembly and reassembly.

In one of the embodiments of the invention, the gate valve contains the first and second opposite hull elements, each of which is made coaxial through passages. In the assembled position, the body elements form a transverse shutter chamber. The shutter is located within the transverse shutter chamber with the possibility of sliding from the open position, in which the shutter does not block the flow of fluid between the through holes, and the closed position, in which the shutter is located between the through holes. The first main annular sealing sleeve is located inside the first housing element, and the second main annular sealing sleeve is located inside the second housing element. Each of the main sealing sleeves is made with the ability to provide a seal by pressing each other in the open position of the valve or pressing it against the gate in the closed position of the valve. There is a secondary sealing element that is aligned with the barrier chamber and fixed between the body elements above the first and second annular main sealing sleeves. The secondary sealing element also has a wall adapted to interact with the valve, ensuring its sealing, and with an opening passing through the wall. The inlet passes at least through one of the first or second body members and is aligned with the aperture of the auxiliary sealing member. The inlet is configured to supply lubricant fluid to the gate through the opening in the auxiliary sealing element. The opening is at least partially limited by a collar. The flange protrudes outward from the wall and is located at least between one of the first or second bodies and the auxiliary sealing element. The lower part of the collar is inclined relative to the surface of the peripheral wall.

Brief Description of the Drawings

FIG. 1 shows one embodiment of a slide gate valve in accordance with the present invention, a sectional view in perspective;

in fig. 2 - a node with a gate valve in accordance with one of the variants of its implementation according to the present invention, a perspective view;

in fig. 3 is a cross-sectional view of an inlet assembly in accordance with one embodiment of the invention;

in fig. 4A-4C is a secondary sealing element in accordance with one embodiment of the invention, various types;

in fig. 5A-5C is a secondary sealing element in accordance with another embodiment

- 1 020076 of the invention, various types;

in fig. 6A-6C — Secondary sealing element in accordance with another embodiment of the invention, various types;

in fig. 7Α-7Ό - secondary sealing element in accordance with another another embodiment of the invention, various types.

Embodiments of the invention

The drawings show preferred embodiments of the invention, however, the present invention can be implemented in various forms and is not limited to the described options. The described embodiments of the invention are presented only for the full disclosure of the invention to specialists in this field of technology. In the drawings, like reference numbers refer to like elements.

FIG. 1 shows one embodiment of a gate valve 10 in accordance with the present invention. The valve 10 includes a housing 11, forming an internal passage 19 for the flow of technological environment. The housing 11 consists of the first and second opposite halves 12 and 13 of mainly i-shaped section, which form a narrow chamber or a gap of sufficient width to enable the passage of the shutter 14 through the specified chamber. The halves 12 and 13 are rigidly interconnected by bolts 16 passing through the respective halves. Half 12 includes an outer flange 21 having a number of mounting holes 22 for connecting to the process piping. Similarly, half 13 includes an outer flange 31, having a number of mounting holes (not shown) for connection to the process piping. In the halves 12 and 13 are installed the main sealing sleeves 20 and 30, respectively. In particular, the main sealing sleeve 20 is installed in half 12, and the main sealing sleeve 30 is installed in half 13. The movable shutter 14 is located between the main sealing sleeves 20 and 30 for opening and closing the valve 10, providing or preventing the flow of the process medium through the valve 10 FIG. 1, the shutter 14 is shown in the open position. The sleeves 20 and 30 include annular elastic bodies 23 and 33, respectively, made of an elastic material, such as natural rubber or other suitable synthetic elastomer. The sleeve 20 from the inner end is reinforced with a reinforcing ring 22, which runs around the circumference of the sleeve. Similarly, the sleeve 30 from the inner end is reinforced with a reinforcing ring 32, which runs around the circumference of the sleeve. Each of the reinforcing rings can be made of durable material such as steel, rigid polyurethane, etc. The sealing sleeve 20 also contains an edge section 20 ', which contributes to the sealing of the connection of the valve 10 with the process pipe attached to the outer flange 21. The sealing sleeve 30 also contains the edge section 30', which helps seal the connection of the valve 10 with the technological pipe connected to the external flange 31.

The first and second halves 12 and 13 form an auxiliary sealing plug 61 in which the secondary elastic sealing element 60 is located. The secondary sealing element 60 is a single element molded from an elastic material, such as natural rubber, or other suitable synthetic elastic polymer, for example polyurethane . The secondary sealing element 60 replaces the standard padding material around the shutter 14, thereby preventing leakage and erasing excess process medium from the shutter 14 as it moves between open and closed positions. The secondary sealing element 60 is attached to the housing 11 by the clamping plate 65, which is essentially rectangular in shape by means of several bolts 66 around the perimeter of the gate 14. Although the main bushings 20 and 30 prevent the direct pressure of drilling mud in the pipeline to the secondary sealing element 60, the element 60 is capable of self-retaining sprays of the process medium during the actuation of the shutter 14. Since the secondary seal 60 is thus dynamically self-adjusting, there is no need to constantly oh manual adjustment to prevent valve leakage required when using traditional seals. The main sealing sleeves 20 and 30, rigid reinforcing rings 22 and 32, as well as the secondary sealing element 60 are described in more detail in patent document I8 5890700, the contents of which are incorporated into the present description by reference.

FIG. 2 shows an assembly 100 comprising a gate valve 10 and a cylinder body 110 located at the upper end of this assembly. The cylinder 110 contains a piston rod (not shown), which is connected to the gate 14, ensuring its displacement and thereby opening or closing the passage 19 for the process medium. The valve body 11 is formed by the halves 12 and 13 with a sealing edge section 20 'located between the flange 121 of the pipeline and the half 12. Although the cross section of the halves 12 and 13 may have a shape different from that shown in FIG. 1, the opposite halves of the housing are rigidly connected with bolts 16 passing through the respective halves. The main sealing sleeves 20 and 30 are installed in the respective halves 12 and 13. The valve 10 also contains a secondary sealing element 60 (not shown) located above the main sealing sleeves 20 and 30. The sealing element 60 is shown in FIG. 3, which shows a partial section along the line A-A in FIG. 2. The secondary sealing element is fixed by clamping plate 65 and bolts 66. According to

- 2 020076 at least one of the halves 12, 13 contains an inlet fitting 120 (shown in FIG. 2 in half 12), which provides access to the inlet for supplying a lubricating fluid, such as grease, oil or similar material, to the gate 14 to improve its slip in the housing 11. Lubrication of the shutter increases the smoothness of the shutter and the durability of the seal, and also reduces the effort required for the movement of the shutter.

As shown in FIG. 3, inlet assembly 115 includes inlet fitting 120, channels 125 and opening 130, which passes through secondary sealing element 60 to gate 14. Secondary sealing element 60 is located in secondary sealing connector 61 between housing halves 12 and 13. A fitting 120, such as a pressurized nipple, is at least partially located in a duct 125 extending in half 12. A fitting 120 has an axial bore 120a opening into the duct 125, which allows the lubricating fluid to flow in one direction ( for example, a one-way check valve) to the gate 14. The hole 130 passes through the auxiliary sealing element 60 and is aligned with the channel 125 in half 12. The secondary sealing element 60 also contains a sealing bead 126, the edge of which is located around the channel 125 for forming a seal with a half 12. The shoulder 126 prevents lubricant from leaking between the secondary sealing element 60 and the corresponding half of the body, in this case half 12. In addition, the shoulder 126 also prevents the process medium through the valve 10 from entering the input unit 115. Although FIG. 3 shows a single channel 125, the node 115 may include first and second channels passing through the secondary sealing element 60, as shown in more detail in FIG. 5A-5C. The secondary sealing element 60 contains internal peripheral walls 131, forming an internal passage 134 along which the shutter 14 moves. Internal peripheral walls 131 contain fins 136 providing sealing of the shutter 14 along its contour and grooves 137 ensuring retention of lubricant introduced into the inlet 115 The lubricating fluid may, for example, be a grease. As disclosed in patent document I8 5890700, the secondary sealing element is installed inside the valve block with lubricating fluid located in the grooves. However, as soon as the lubricant is exhausted as a result of the opening and closing of the valve, the secondary seal must be removed from the valve to introduce the new lubricant into the grooves. As indicated above, this requires a break in the work of the process line to dismantle a part of the secondary seal, introduce additional lubrication and reassemble the valve. When using the inlet 115, the lubricating fluid can be injected into the secondary sealing element in place and, therefore, delivered to the gate 14 without costly production downtime, dismantling and reassembling the valve 10.

As shown in FIG. 4A-4C, the secondary sealing element 60 of a generally rectangular cross-section has an internal passage 134 allowing the passage of the shutter 14. As shown in perspective in FIG. 4A, the secondary sealing element 60 has an inner peripheral wall 131 formed by a pair of longitudinally extending elements 131a and 131b and a pair of transversely moving elements 131c and 1316. A single opening 130 passes through the peripheral wall 131a and is partially surrounded by a shoulder 126. a fitting 120 is located, which is aligned with the channel 125 for supplying lubricating fluid to the opening 130 and to the shutter 14. Shown in a side view (Fig. 4B), the secondary sealing element 60 has fins 136 and grooves 137 (shown by dotted lines), rohodyaschie along the inner peripheral wall 131. In the secondary sealing member 4 holds 60 first opening 130 extending through the peripheral wall 131a and a second opening 230 (shown in phantom) extending through the peripheral wall 131. Through these openings 130 and 230, lubricant is supplied to opposite sides of the shutter 14. Secondary sealing element 60 also comprises a first flange 126, surrounding the entrance to the first opening 125, and a second flange 226, surrounding the entrance to the second opening 230. As shown in FIG. 4B, the openings 130 and 230 are aligned, in particular, with one of the grooves 137 on the inner surface of the respective peripheral walls 131a and 131b for supplying lubricant to the gate 14. However, if necessary, these holes can be aligned with any of the grooves 137 and / or with different gutters. Although the holes 130 and 230 are shown located at different ends of the sealing element 60, the placement of these holes among the elements of the valve assembly can be limited only by the ability to access the corresponding fitting (for example, 120). FIG. 4C shows a top view of a secondary sealing element 60 having an internal passage 134 through which the shutter 14 moves. The peripheral inner walls 131 of the secondary sealing element 60 interact with the outer surface of the shutter 14. This ensures the sealing of the shutter 14, preventing leakage and wiping the excess process medium off the shutter 14 when it passes along the inner peripheral wall 131. In this configuration, the sealing element 60 contains the first flange 126, located on one wall 60a, and the second shoulder to 226, located on the opposite second wall 60. The lubricant is introduced into the hole 126 or fitting 120, enters the channel 125 passing through the housing 12, then into the hole 130 of the secondary sealing element 60 to the rib 136 and comes into contact with the shutter 14.

FIG. 5A-5C, another embodiment of a secondary sealing element 360 is shown having a substantially rectangular cross section. FIG. 5A secondary sealing element

- 3 020076

360 is shown in perspective. Secondary sealing element 360 has an internal passage 334 formed by an inner peripheral wall 331, which consists of a pair of longitudinal walls 331a and 331b and a pair of transverse walls 331c and 3316. In the sealing element 360, the first and second openings 330a and 330b are made, passing through the peripheral wall 331a which are surrounded by a shoulder 326. FIG. 5B, the first and second openings 330a and 330b are shown, surrounded by a shoulder 326, and the third and fourth openings 430a and 430b, surrounded by a shoulder 426 (shown in dotted lines). The ribs 336 and grooves 337 (shown with a dotted line) extend along the inner peripheral wall 331. The first and second openings 330a, 330b and the third and fourth openings 430a and 430b provide lubrication to opposite sides of the gate 14. As shown in FIG. 5B, each of the openings 330 and 430 is aligned, in particular, with one of the grooves 337 formed on the inner peripheral wall 331. Similarly, each of the openings 330b and 430b is aligned, in particular, with one of the respective grooves 337. However, if necessary, the holes can be aligned with any of the grooves 337 and / or with different grooves. Similarly, the holes shown in FIG. 4B, the openings 330a, 330b, 430a, and 430b are shown located at different ends of the sealing element 360, and the placement of the respective channels among the elements of the shutter assembly can only be limited by the ability to access the appropriate lubricant fittings. FIG. 5C is a cross-sectional sectional view of the sealing element 360 along line B-B in FIG. 5B, illustrating the alignment of the holes with the grooves. The first and second openings 330a and 330b are aligned with the grooves 337 and are surrounded by a shoulder 326. The lubricant supplied through the openings 330a and 330b enters the grooves 337 and into the internal channel 334, in which the shutter 14 moves, thereby lubricating it. Thus, through the secondary sealing element 360 can pass several through holes for supplying lubricant to the gate without the need for an expensive interruption in the operation of the process line for dismantling and reassembly.

FIG. 6A-6C, an additional embodiment of the secondary sealing element 460 is shown. In FIG. 6A, the secondary sealing element 460 is shown in perspective. The secondary sealing element 460 has an internal passage 434 formed by an internal peripheral wall 431, which consists of a pair of longitudinal walls 431a and 431b and a pair of transverse walls 431c and 4316. The first and second openings 430a and 430b are made in the sealing element 460 and pass through the peripheral wall 431a which are surrounded by a shoulder 426. Another pair of holes and the corresponding shoulder are located on the peripheral wall 431a and are denoted by the common number 425.

FIG. 6B shows, on a larger scale, a fragment of the secondary sealing element 460 with the first and second openings 430a and 430b surrounded by a shoulder 426. One of the ribs 436 and one of the grooves 437 are shown on the inside of the peripheral wall 431a. The inside of the peripheral wall 431b also contains similar ribs and grooves. The first and second openings 430a and 430b, surrounded by a shoulder 426, provide the possibility of supplying lubricant to opposite sides of the shutter 14 (as shown in FIG. 1) as it passes through the internal passage 434. As shown in FIG. 6C, the upper part 426a of the shoulder 426 extends to the upper part of the wall 431b, and the lower part 426b is located at an angle to the surface of the peripheral wall 431b. The flange 426 prevents lubricant from leaking between the secondary sealing element 460 and the corresponding half of the valve body 10. In addition, the flange 426 also prevents the technological medium that has flowed through the valve 10 from entering the corresponding inlet (as shown in FIG. 3). Each of the holes 430a and 430b is aligned with one of the grooves 437 formed on the inside of the peripheral wall 431b. Similar to the holes shown in FIG. 4 and 5, in FIG. 6C, the openings are shown located at different ends of the sealing element 460. However, the placement of these openings among the elements of the valve assembly can be limited only by the ability to access the appropriate fittings for lubrication.

FIG. 6C shows more clearly the grooves 437a and 437b, the ribs 436 and the corresponding alignment of the grooves with the holes. The first and second openings 430a and 430b, which pass through the peripheral wall 431b, are aligned with the grooves 437a and 437b, respectively. The first and second holes are surrounded by a shoulder 426, which has an upper portion 426a and a lower inclined portion 426b. When applying lubricant to the holes 430a and 430b, this lubricant goes to the grooves 437a, 437b and into the internal channel 434, through which the shutter 14 moves, thereby lubricating it. Thus, openings can be made in the secondary sealing element 460 to provide lubrication to the valve without the need for costly process downtime, disassembly and reassembly.

FIG. 7Ά-7Ό, another embodiment of the secondary sealing element 560 is shown. In FIG. 7A, secondary sealing element 560 is shown in perspective. Secondary sealing element 560 has an internal passageway 534 formed by an internal peripheral wall 531, which consists of a pair of longitudinal walls 531a and 531b and a pair of transverse walls 531c and 5316. In the sealing element 560, the first and second openings 530a and 530b are made, passing through the peripheral wall 531a which are surrounded by a shoulder 526. Another pair of holes and the corresponding shoulder are located on the peripheral wall 531a and are indicated by the common number 525.

FIG. 7B shows, on a larger scale, a fragment of the secondary sealing element 560 s.

- 4 020076 by the first and second openings 530a and 530b, surrounded by a shoulder 526. The shoulder 526 is formed by a pair of transverse walls 526a, 526b and a longitudinal wall 526c. The transverse walls 526a and 526b extend from the upper part of the peripheral wall 531b to its lower part. The upper part of the transverse walls 526a and 526b extends to the clamping bar 65, as shown in FIG. 7Ό. The lower part 526c of the shoulder 526 is rotated from the surface of the peripheral wall 531b. The drawing shows one of the ribs 536 and one of the grooves 537 formed on the inside of the peripheral wall 531a. Similar ribs and grooves are also formed on the inside of the peripheral wall 531b. The first and second openings 530a, 530b, surrounded by a shoulder 526, provide the possibility of supplying lubricant to opposite sides of the shutter 14 as it moves in the inner passage 534. The shoulder 526 prevents leakage of lubricant between the secondary sealing element 560 and the corresponding half of the valve body 10. In addition, the shoulder 526 also prevents the technological medium flowing through the valve 10 from entering the corresponding input unit (as shown in FIG. 3). Each of the holes 530a and 530b is aligned with one of the grooves 537 formed on the inside of the peripheral wall 531b, as shown in FIG. 7C. Similar to the holes shown in FIG. 4, 5 and 6, the holes in FIG. 7B are shown placed at different ends of the sealing element 560. However, the placement of these holes may be limited only by the ability to access the corresponding fittings among the elements of the valve assembly for the introduction of lubricant.

FIG. 7C shows more clearly the grooves 437, the ribs 436 and the corresponding combination of the grooves with the holes 530a, 530b. The first and second openings 530a and 530b, which pass through the peripheral wall 531b, are aligned with the grooves 537a and 537b, respectively. The longitudinal wall 526c of the shoulder 526 has an inclined part 5266. When lubricant is supplied to the holes 530a and 530b, this lubricant enters the grooves 537a, 537b and into the internal passage 534, through which the shutter 14 moves, thereby lubricating it.

FIG. 7Ό shows the clamping bar 65 for the secondary seal, mounted on the secondary sealing element 560. Each of the transverse walls 526a, flange 526 extends upwardly to the lower surface of the clamping bar 65.

Although the present invention is disclosed by the example of some variants of its implementation, various modifications of the described variants are possible without departing from the scope of the present invention defined by its formula. Accordingly, the present invention is not intended to limit the described variants of its implementation, but covers the entire amount defined by the claims and their equivalents.

Claims (20)

CLAIM 1. Gate valve containing the first and second opposite hull elements, each of which is made coaxial through passages and which form a transverse shutter chamber at the connection of these hull elements; a shutter located in the transverse stopping chamber and made slidable in it from an open position, in which the shutter does not block the flow of fluid through coaxial through passages, and a closed position in which the shutter is located between coaxial pass passes; the first and second main annular sealing sleeves, which are located in the first and second housing elements, respectively, and each of which is configured to provide a seal by pressing the valve to each other in the open position or pressing it to the gate in the closed position of the valve; secondary sealing element aligned with the transverse sealing chamber, fixed between the first and second housing elements above the first and second main annular sealing sleeves and having an inner peripheral wall that is interoperable with the valve to ensure sealing, and passing through it in the secondary sealing element hole; an inlet channel passing through the first and / or second body member aligned with said opening in the secondary sealing element and configured to supply lubricant fluid to the gate through said opening in the secondary sealing element; and a fitting having a first hole, a second hole and an axially aligned channel connecting the first and second holes, wherein said channel is at least partially located inside the inlet channel and configured to receive a lubricating fluid in the first hole with the flow of this fluid medium through the axially aligned channel in the second hole and the inlet channel. 2. Gate valve according to claim 1, in which the first and second main annular sealing sleeves are made of elastomeric material in the form of an axially deformable ring body. 3. Sliding valve according to claim 1, in which the secondary sealing element is made in the form of a solid deformable body of elastomeric material and has an internal passage for the passage of the shutter. - 5 020076 4. Slider valve according to claim 1, in which the inner peripheral wall of the auxiliary sealing element contains alternating ribs and grooves, designed in such a way that the ribs interact with the gate, ensuring its sealing, and at least one of the grooves is aligned with the specified opening in the secondary sealing element with the possibility of receiving lubricating fluid. 5. Slider valve according to claim 1, in which the secondary sealing element further comprises a shoulder, which restricts the entrance to the specified hole and protrudes outward from the specified secondary sealing element. 6. Gate valve according to claim 1, in which the fitting includes a check valve. 7. Sliding valve according to claim 1, wherein said opening in the secondary sealing element is the first opening and the second opening passing through it in the secondary sealing element. 8. Gate valve according to claim 7, in which the fitting is connected to each of these two holes. 9. Gate valve containing the first and second opposite hull elements, each of which is made coaxial through passages and which form a transverse shutter chamber when connecting these hull elements; a shutter located in the transverse stopping chamber and made slidable in it from an open position, in which the shutter does not block the flow of fluid through coaxial through passages, and a closed position in which the shutter is located between coaxial pass passes; the first and second main annular sealing sleeves, which are located in the first and second housing elements, respectively, and each of which is configured to provide a seal by pressing the valve to each other in the open position or pressing it to the gate in the closed position of the valve; secondary sealing element aligned with the transverse sealing chamber, fixed between the first and second housing elements above the first and second main annular sealing sleeves and having an inner peripheral wall that is interoperable with the valve to ensure sealing, and passing through it in the secondary sealing element hole; and an inlet channel passing through the first and / or second housing elements aligned with said opening in the secondary sealing element and configured to supply lubricant fluid to the gate through said opening in the secondary sealing element; in which the secondary sealing element further comprises a shoulder, which restricts the entrance to the specified hole, protrudes outward from the specified secondary sealing element and is located between the first and / or second body elements and the secondary sealing element. 10. Gate valve according to claim 9, in which the inlet channel is a first inlet channel and which further comprises a second inlet channel passing through the first and / or second housing elements, aligned with the second opening in the secondary sealing element and configured to feed to the gate lubricating fluid through the second hole in the secondary sealing element. 11. Gate valve of claim 10, which further comprises a nozzle having a first hole, a second hole and an axially aligned channel connecting the first and second holes, wherein said channel is at least partially located inside the inlet channel and made the possibility of receiving lubricating fluid in the first hole with the flow of this fluid through the axially aligned channel into the second hole and the input channel. 12. Gate valve according to claim 9, in which the inner peripheral wall of the auxiliary sealing element contains alternating ribs and grooves, designed in such a way that the ribs interact with the gate, ensuring its seal, and at least one of the grooves is aligned with the specified opening in the secondary sealing element with the possibility of receiving lubricating fluid. 13. Gate valve according to claim 9, which further comprises a nozzle having a first hole, a second hole and an axially aligned channel connecting the first and second holes, wherein said channel is at least partially located inside the inlet channel and is made with the possibility of receiving lubricating fluid in the first hole with the flow of this fluid through the axially aligned channel into the second hole and the input channel. 14. Gate valve according to item 13, in which the nozzle contains a check valve. 15. Gate valve according to item 13, in which the nozzle is connected with each of the two specified holes. 16. Slider valve according to claim 9, in which the specified hole in the secondary sealing element is the first hole, and in the secondary sealing element is made passing through - 6 020076 it is the second hole. 17. Gate valve containing the first and second opposite hull elements, each of which is made coaxial through passages and which form a transverse shutter chamber at the connection of these hull elements; a shutter located in the transverse stopping chamber and made slidable in it from an open position, in which the shutter does not block the flow of fluid through coaxial through passages, and a closed position in which the shutter is located between coaxial pass passes; the first and second main annular sealing sleeves, which are located in the first and second housing elements, respectively, and each of which is configured to provide a seal by pressing the valve to each other in the open position or pressing it to the gate in the closed position of the valve; secondary sealing element aligned with the transverse sealing chamber, fixed between the first and second housing elements above the first and second main annular sealing sleeves and having an inner peripheral wall that is interoperable with the valve to ensure sealing, and passing through it in the secondary sealing element hole; and an inlet channel passing through the first and / or second housing elements, aligned with said opening in the secondary sealing element and configured to supply lubricant fluid to the gate through said opening in the secondary sealing element; in which the specified hole in the secondary sealing element is the first hole, and in the secondary sealing element is passed through the second hole. 18. Slide valve according to claim 17, in which the secondary sealing element further comprises a shoulder, which restricts the entrance to the specified hole and protrudes outward from the specified secondary sealing element. 19. Gate valve according to claim 17, which further comprises a nozzle having a first hole, a second hole and an axially aligned channel connecting the first and second holes, wherein said channel is at least partially located inside the inlet channel and is made with the possibility of receiving lubricating fluid in the first hole with the flow of this fluid through the axially aligned channel into the second hole and the input channel. 20. Slide valve according to claim 17, in which the nozzle is connected to each of the two specified holes.